Maintenance tool didn't remove Qt 5.1.0 and still believe it's there

I have just installed Qt 5.1.1 (and Qt Creator 2.8.1, separately) using the maintenance tool. In the process, I also asked for Qt 5.1.0 to be completely removed from my system. Now, Qt 5.1.1 got properly installed, but on the other hand Qt 5.1.0 didn’t get uninstalled, even though the maintenance tool told me that there were going to be things to remove. So, I ended up removing Qt 5.1.0 manually. From there, I thought I would check what the maintenance tool tells me and, well, it tells me that Qt 5.1.0 is still installed...?!

PS: the log file is for OS X 10.8.4.